1. Department of Medical Ultrasound, Tenth People’s Hospital of Tongji University, Ultrasound Research and Education Institute, Tongji University School of Medicine, Shanghai, China
2. Department of Ultrasound, Tongji Hospital, Tongji University School of Medicine, Shanghai, China
3. State Key Laboratory of High Performance Ceramic and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Science, Shanghai, China